"These individuals are street-level dealers - people who affected daily life in this community," Green said.

Lewis, who has served as chief since January, vowed to maintain a vigorous stance and expressed thanks for the state and county assistance.

"We do need the help," he said.

A criminal complaint for Brian Lamar Slowe, 34, of Chester, states that at 4:38 p.m. on March 12, 2007, an undercover officer arranged to meet him in the 1100 block of Ridley Avenue to buy $275 worth of cocaine. The officer put the money into a pocket containing $200 for another drug buy and mistakenly paid Slowe $475, the complaint said.

"Immediately after departing the area, Slowe called me and told me that I gave him too much money," the officer wrote in the complaint. The officer returned to the exchange site, and Slowe handed him $200, the complaint said.